UBC 245

0.48 UTI

0.26

C_N

0.3

C_dens

0.75

C_C3

0.55

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 26

Radius (P>50% members) 6.3 [arcmin]

C_N 0.26 Poorly populated
C_dens 0.3 Loose
C_C3 0.75 High quality
C_lit 0.55 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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UBC 245 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is moderately studied in the literature.

Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Very young

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: good fit.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 245 in: SciX Simbad

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Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	129.268	-45.267	0.441	-4.616	4.305	–
Li et al.	2025	129.276	-45.245	0.423	-4.629	4.294	–
Almeida et al.	2025	129.319	-45.227	–	–	–	–
Hunt & Reffert	2024	129.27	-45.337	0.447	-4.612	4.305	–
Cavallo et al.	2024	129.354	-45.253	0.446	–	–	–
Hunt & Reffert	2023	129.27	-45.337	0.447	-4.612	4.305	–
Almeida et al.	2023	129.315	-45.229	–	–	–	–
Dias et al.	2021	129.319	-45.227	0.424	-4.635	4.312	–
Cantat-Gaudin et al.	2020	129.276	-45.245	0.423	-4.629	4.294	–
Castro-Ginard et al.	2020	129.318	-45.244	0.428	-4.634	4.294	–

💡 Note: The UCC values are estimated from its identified members.

Reference	Year	Dist [kpc]	Av [mag]	DAv [mag]	Age [Myr]	[Fe/H] [dex]	Mass [Msun]	Bfr	BSS
Li et al.	2025	1.79	1.41	–	14	-0.349	–	–	–
Almeida et al.	2025	2.19	1.59	–	14	–	566	–	–
Hunt & Reffert	2024	–	–	–	–	–	206*	–	–
Cavallo et al.	2024	2.07	1.65	–	17	-0.350	–	–	–
Hunt & Reffert	2023	2.16	1.44	0.82	21	–	–	–	–
Almeida et al.	2023	1.98	1.64	–	19	0.002	561*	0.61	–
Dias et al.	2021	2.19	1.59	–	14	0.117	–	–	–
Cantat-Gaudin et al.	2020	2.30	0.92	–	35	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 382	46.2	129.24	-45.23	0.45	-4.58	4.36	–	0.1

💡 Note: The % column shows the percentage of members that UBC 245 shares with each listed object.

Visualization

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